added start of automated grasp execution

object_msgs/srv/ObjectInfo.srv

@@ -9,8 +9,16 @@ bool get_geometry
 ---
 
 # true if object exists and information is
-# stored in field 'object'
+# stored in field 'object'. If false, the
+# error_code contains more information about the error.
 bool success
 
 # information about the object
 Object object
+
+# error code if success is false
+byte error_code
+
+byte NO_ERROR=0
+byte OBJECT_NOT_FOUND=1
+byte OTHER_ERROR=2